Results 51 to 60 of about 1,124 (167)

Simultaneous decoupling of bottom and charm quarks [PDF]

Journal of High Energy Physics, 2011
30 ...
Grozin, A. G., Höschele, M., Hoff, J., Steinhauser, M.   +3 more
openaire   +4 more sources

THE PUZZLE OF THE BOTTOM QUARK PRODUCTION CROSS SECTION [PDF]

International Journal of Modern Physics A, 2003
The production rate of bottom quarks at hadron colliders exceeds the expectations of next-to-leading order perturbative quantum chromodynamics. An additional contribution from pair-production of light gluinos, of mass 12 to 16 GeV, with two-body decays into bottom quarks and light bottom squarks, yields a differential cross section for bottom quarks ...
openaire   +2 more sources

Probing quantum decoherence at Belle II and LHCb

Journal of High Energy Physics
With the advent of Belle II and the LHCb upgrade, the precision measurements of various B-Physics observables are on cards. This holds significant potential for delving into physics beyond the standard model of electroweak interactions.
Ashutosh Kumar Alok, Subhashish Banerjee, Neetu Raj Singh Chundawat, S.Uma Sankar   +3 more
doaj   +1 more source

Fragmentation of bottom quarks in top quark decay

, 2004
We review the main aspects of the fragmentation of bottom quarks in top quark decay. The NLO b-quark energy spectrum presents large mass logarithms ln(m_t^2/m_b^2), which can be resummed by the use of the approach of perturbative fragmentation functions.
openaire   +2 more sources

Structure-dependent QED in B − → ℓ − ν ¯ γ $$ {B}^{-}\to {\ell}^{-}\overline{\nu}\left(\gamma \right) $$

Journal of High Energy Physics
Based on explicitly gauge invariant interpolating operators we compute complete next-leading order QED-corrections for leptonic decays. These are sizeable since the helicity-suppression in V-A interactions allows for structure-dependent collinear logs ...
Matthew Rowe, Roman Zwicky
doaj   +1 more source

Alternative treatment of the quark mass in the heavy quark expansion

Journal of High Energy Physics, 2023
The treatment of the quark mass plays an important role when it comes to increasing the precision of the predictions of the heavy quark expansion for inclusive heavy hadron decays.
Anastasia Boushmelev, Thomas Mannel, K. Keri Vos   +2 more
doaj   +1 more source

Strange-quark mass effects in the B s meson’s light-cone distribution amplitude

Journal of High Energy Physics, 2023
We investigate the differences between the light-cone distribution amplitudes (LCDAs) of B s mesons and B q mesons (with q = u, d) induced by a non-vanishing strange-quark mass m s ≠ 0 (compared to m q ≃ 0).
Thorsten Feldmann, Philip Lüghausen, Nicolas Seitz   +2 more
doaj   +1 more source

Higher twist corrections to doubly-charmed baryonic B decays

Journal of High Energy Physics
Baryonic two-body B mesons decays have been measured experimentally for some time, which provides an excellent ground for studying the QCD of baryonic B decays.
Zhou Rui, Zhi-Tian Zou, Ying Li
doaj   +1 more source

Detailed SU(3) flavour symmetry analysis of charmless two-body B-meson decays including factorizable corrections

Journal of High Energy Physics
We study the decays of B (s) mesons into light pseudoscalar mesons under the SU(3) flavour symmetry. Assuming exact SU(3) symmetry at the level of the amplitudes leads to a simple parametrisation.
M. Burgos Marcos, M. Reboud, K. K. Vos
doaj   +1 more source

Determination of B-meson distribution amplitudes from B → π, K, D transition form factors

Journal of High Energy Physics
Recent work on B → π, K and B → D form factors from lattice QCD and light-cone sum rules has made it possible to constrain the inverse moment λ B of the B-meson light-cone distribution amplitudes by performing a global fit of B → π, K, D form factors. We
Dong-Hao Li, Cai-Dian Lü, Ulf-G. Meißner, Jing Gao   +3 more
doaj   +1 more source